Obiettivo In the Federal Republic of Germany, radioactive waste forms of pronounced decay heat generation shall be disposed of in deep vertical boreholes in the final repository at Gorleben site. The disposal technique for heat generation intermediate-level waste and for spent HTR fuel is under development in the R&D project, entitled "Intermediate-Level Waste and Spent HTR Fuel Element Test Disposal in Boreholes" (MHV project). The MHV project is divided in two sub-projects and is supported by the Bundesminister für Forschung und Technologie (BMFT) since 1983. In the sub-project "Retrievable Emplacement Test" (REV), supported by the Commission of the EC, an emplacement experiment with available waste packages will be conducted in the Asse salt mine. The objectives of the REV project are to characterize the available waste packages within a hot cell investigation programme at KFA, to demonstrate basic handling and emplacement operations, to show that emplacement in boreholes can be operated safely with respect to radiation protection, to investigate the interactions between waste packages, borehole atmospheres and surrounding salt rock by monitoring, and in particular, to study the effects on gas release and generation. The duration of the emplacement experiment itself intended to be up to a maximum of five years. N.B. In December 1992 the BMFT postponed the project.Apart from demonstrating that radioactive wastes can be safely handled under real mining conditions, the objective of this programme is above all to demonstrate that during storage no circumstances arise which could cast doubt upon safe operation of storage boreholes. In addition, it will be possible for the first time so study the effects of gas release from wastes into a final repository borehole.The retrievable emplacement test with intermediate level waste (ILW) and spent high tension reactor (HTR) fuel element packages will take place in three vertical boreholes of the Asse salt mine. The drift was driven, the boreholes were drilled and partially instrumented, and the main components were fabricated in parts during previous phases of the project. Installation of the borehole internals and fabrication of all components have nearly been completed. Inactive system tests have successfully been performed to check the interactive function of all major handling components.Work programme:1. Preparation of the experiment1.1 Coordination of work between GSF and KFA1.2 Assembly, installation and test of components1.3 Licensing1.4 Installation of radiation protection instruments1.5 Staff training for emplacement and retrieval2. Implementation of the experiment2.1 Coordination of work between GSF and KFA2.2 Transport of the waste packages to the Asse mine2.3 Emplacement of the waste packages2.4 Measurement of dose rate, temperature, gas composition and borehole convergence2.5 Maintenance of equipment2.6 Radiation protection measurements2.7 Staff training for retrieval Campo scientifico engineering and technologyother engineering and technologiesnuclear engineeringnuclear waste managementengineering and technologyenvironmental engineeringenergy and fuelssocial sciencespolitical sciencesgovernment systems Programma(i) FP2-RADWASTOM 4C - Specific research and technical development programme (Euratom) in the field of management and storage of radioactive waste, 1990-1994 Argomento(i) B.1 - The underground facility in the Asse Salt Mine (FRG) Invito a presentare proposte Data not available Meccanismo di finanziamento CSC - Cost-sharing contracts Coordinatore FORSCHUNGSZENTRUM JUELICH GMBH Contributo UE Nessun dato Indirizzo WILHELM JOHNEN STRASSE 52425 JUELICH Germania Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato Partecipanti (1) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto GSF - FORSCHUNGSZENTRUM FUER UMWELT UND GESUNDHEIT GMBH Germania Contributo UE Nessun dato Indirizzo Ingolstaedter Landstrasse 1 85764 NEUHERBERG Mostra sulla mappa Collegamenti Sito web Opens in new window Costo totale Nessun dato